Charles H. Townes, Aleksandr Prokharov & Nikolai Bosov
Aleksandr Prokhorov (left) and Nikolai Basov (right) show their laboratory to Charles Townes (center). The three shared the Nobel Prize in physics in 1964 for their work on masers and lasers.
© Sources for the History of Lasers, courtesy AIP Emilio Segrè Visual Archives, Hecht Collection